You're answering your own question, and the key word is invasion.
When there's political unrest in a country, it is usually between two or more factions with different point of view, that can be political, religious, sectarian, etc., and this factions will fight each other so they can control the nation to their will.
What usually happens is that one country (almost always the U.S.) has an interest in this revolting country, this could be money, resources, military strategy, free-trade, among others, and it will be "invited" by one of the factions, almost always it is the most likely to succeed, in exchange for military support direct or indirect and finally this faction will reign.
The problem now is that the enemy is not only the faction which now becomes the government, but also the invading country, and the enemy isn't a single opposing faction anymore, but the gathering of all of them, with a newly acquired sense of nationalism and so starts a war against a foreign invasor and the inviting government.
Worst case scenario: a cycle that continually repeats itself, like in the case of Afghanistan.
It has lead to the invasion and occupation of countries suspected of supporting terrorists.
Julius Caesar did not lead the first roman invasion but he did lead the first roman invasion on great Britain
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it has lead other governments to create similar documents for their nations
The D Day landings lead to the liberation of France. After France was liberated, other Nazi occupied countries, like Belgium were also liberated by the Allies.
People from rural areas as well as foreign countries flocked to the cities for factory jobs.
People from rural areas as well as foreign countries flocked to the cities for factory jobs.
The Office of Foreign Disaster Assistance (OFDA) is the lead. OFDA is an office within USAID's Bureau for Democracy, Conflict, and, Humanitarian Assistance. NOTE: USAID - U.S. Agency for International Development
Athens did not remain a democracy. The war required strong leadership, and the oligarchs took over again to organise and lead the war machine. They held on after the Persian invasion had been repelled and the struggle for the eastern Mediterranean continued. It was not until 20 year later that Ephialtes led a counter move and restored democracy.
Shigeru Honjo .
Omar bradley